From: Christian Brauner <christian.brauner@ubuntu.com>
Date: Sat, 17 Feb 2018 18:29:02 +0000 (+0100)
Subject: cgfsng: cgfsng_enter()
X-Git-Tag: lxc-2.0.10~282
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=c4228c5b27e4f539c41a5ccb5a7bf26219d34707;p=thirdparty%2Flxc.git

cgfsng: cgfsng_enter()

Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>
---

diff --git a/src/lxc/cgroups/cgfsng.c b/src/lxc/cgroups/cgfsng.c
index 081a06311..9d9ba5adb 100644
--- a/src/lxc/cgroups/cgfsng.c
+++ b/src/lxc/cgroups/cgfsng.c
@@ -1822,18 +1822,22 @@ out_free:
 
 static bool cgfsng_enter(void *hdata, pid_t pid)
 {
-	char pidstr[25];
 	int i, len;
+	char pidstr[25];
 
 	len = snprintf(pidstr, 25, "%d", pid);
-	if (len < 0 || len > 25)
+	if (len < 0 || len >= 25)
 		return false;
 
 	for (i = 0; hierarchies[i]; i++) {
-		char *fullpath = must_make_path(hierarchies[i]->fullcgpath,
-						"cgroup.procs", NULL);
-		if (lxc_write_to_file(fullpath, pidstr, len, false) != 0) {
-			SYSERROR("Failed to enter %s", fullpath);
+		int ret;
+		char *fullpath;
+
+		fullpath = must_make_path(hierarchies[i]->fullcgpath,
+					  "cgroup.procs", NULL);
+		ret = lxc_write_to_file(fullpath, pidstr, len, false);
+		if (ret != 0) {
+			SYSERROR("Failed to enter cgroup \"%s\"", fullpath);
 			free(fullpath);
 			return false;
 		}